Plant nutrient‐acquisition strategies contribute to species replacement during primary succession

作者：Xiao‐Long Li, Jun Zhou, Hejun Du, Fei Peng, Hongtao Zhong, Yanhong Wu, Ji Luo, Shouqin Sun, Yue‐Xin Ming, Hongyang Sun, Yang Chen, Jun Wasaki, Hans Lambers · 发表于：Journal of Ecology · 年份：2025 · DOI：10.1111/1365-2745.70017 · 被引用次数：11 · 研究领域：Mycorrhizal Fungi and Plant Interactions、Seedling growth and survival studies、Ecology and Vegetation Dynamics Studies

Abstract Plant nutrient‐acquisition strategies (NAS) linking soil nutrients to plant growth are considered crucial to species replacement during primary succession. However, empirical evidence from field studies remains scarce. We examined the replacement of Hippophae tibetana (Elaeagnaceae) by Populus purdomii (Salicaceae) during the first three stages (S1–S3) of succession along the Hailuogou postglacial chronosequence in southwest China. We investigated changes in the scavenging, mining and N 2 ‐fixing strategies of the two species with varying soil nutrient levels and evaluated how these NAS influenced plant performance with succession. Bioavailable nitrogen and phosphorus concentrations increased significantly from near detection limits at the S1 stage to 60 and 41 mg kg −1 at the S3 stage, respectively. Despite this, H. tibetana maintained mining and N 2 ‐fixing strategies, as indicated by rhizothamnia, cluster roots and lower pH, and higher carboxylate concentration and acid phosphatase activities in soil surrounding roots compared with those around P . purdomii at all sites. Conversely, P . purdomii relied on scavenging strategies, evidenced by higher ectomycorrhizal colonization and specific root length, smaller root diameter and more negative leaf δ 13 C than those of H. tibetana . Leaf nitrogen and phosphorus concentration, along with the relative abundance of H. tibetana , were significantly higher than those of P . purdomii at S1, but this reversed at S3. Linear ...